HD6433682 ETC, HD6433682 Datasheet - Page 281
HD6433682
Manufacturer Part Number
HD6433682
Description
Renesas 16-Bit Single-Chip Microcomputer H8 Family/H8/300H Tiny Series
Manufacturer
ETC
Datasheet
1.HD6433682.pdf
(504 pages)
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Quantity
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Part Number:
HD6433682A45HV
Manufacturer:
RENESAS/瑞萨
Quantity:
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HD6433682C74HV
Manufacturer:
HITACHI/日立
Quantity:
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16.3.7
SSR is a register containing status flags of the SCI3 and multiprocessor bits for transfer. 1 cannot
be written to flags TDRE, RDRF, OER, PER, and FER; they can only be cleared.
Bit
7
6
5
4
Bit Name
TDRE
RDRF
OER
FER
Serial Status Register (SSR)
Initial
Value
1
0
0
0
R/W
R/W
R/W
R/W
R/W
Description
Transmit Data Register Empty
Indicates whether TDR contains transmit data.
[Setting conditions]
[Clearing conditions]
Receive Data Register Full
Indicates that the received data is stored in RDR.
[Setting condition]
[Clearing conditions]
Overrun Error
[Setting condition]
[Clearing condition]
Framing Error
[Setting condition]
[Clearing condition]
When the TE bit in SCR3 is 0
When data is transferred from TDR to TSR
When 0 is written to TDRE after reading TDRE = 1
When the transmit data is written to TDR
When serial reception ends normally and receive data
is transferred from RSR to RDR
When 0 is written to RDRF after reading RDRF = 1
When data is read from RDR
When an overrun error occurs in reception
When 0 is written to OER after reading OER = 1
When a framing error occurs in reception
When 0 is written to FER after reading FER = 1
Rev. 3.00, 05/03, page 251 of 472
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